 Johor further built an alliance with Pahang, Palembang, Jambi, Inderagiri, Kampar and Siak against Aceh.Iskandar Muda's campaigns continued, however, and he was able to defeat a Portuguese fleet at Bintan in 1614.In 1617 he conquered Pahang and carried its sultan Ahmad Syah to Aceh, and thus achieved a foothold on the Malayan peninsula.